Coal cutting machine



' Jan. 16, 1940. J. J. CLINE.

COAL CUTTING MACHINE Filed July 14, 1939 IN VEN TOR.

ATTORNEYS.

ran ement of parts and inthedetails of constructions hereinafter described and claimed, it ,being understood that changes in the precise embodiment of the invention herein disclosed, may

Patented 1940f tion aims to supply, novel neansflfor supporting and connectingsundry shafts offlthe machina'to improve the bearing structure; to secureproper belancey in [the machineQand to. provide a dc- 1 I vicewherein; movable parts will receiveadequate a lubrication.

1 without departing from the spirit of the invensingle, vertical sectional figure.

,(notshowm movable along a1 cutter'barfl coni It is fwithin the province of itheldisclosure to improve generally and \topenhance the utility 'of devicesof thattype towhich thepresent invene With the above and other: objects in view, which will appear 3 as thedescription proceeds, the invention residesinthe combination and arbe made within the scope of whatyis' claimed,

tion; l, e i a In the drawing, the invention is disclosed in a The general type of machine to which theprescut-improvements are applied: is common and wellknown.

, A powerdriven beveled pinion I imparts rotationto a beveled gear 2, rotating a first shaft 3;

having a ,pinion 4, meshing with a rotatably mounted gear wheeljfto which is connected a sprocket wheel 6, adapted to drive a cutter chain nected at 8 tothe frame F of themachine.

The frame F includes "a partition 9, provided" in its upper surface' with a. seat l0, shaped to receive, removably, ,a first ,ball bearing H, the portion of, the partition which forms the bottom of the seatlll being supplied with drift holes l2,

hrough which, theball bearing Ilfcanbe driven out of theseat Illjupon occasion; i

1 One end ofthe shaft 3 is received within the bearing, l lfthe pinion 4 being carried by the shaft and overhanging the, bearing ,||,the sprocket wheel 6 constituting a portionof a cuttingmech anism, driven by the pinion" 4. The beveled gear Zreceives motionfrom the beveled pinion I,,the

' pinion I being operated by apower shaft 14;, sup- 4:; The upper endof thehub 15 andthe adjacent portion of the shaft 3 are, provided with coop crating recesses It; A key I! connects the hub n 15 of the beveledgeer 2 with; the shaft 3. Aring ported for-rotationviin the frameF. I

1 The gear 2 includes a. hub I 5, surrounding, the;

shaftt and engagingthe upperend of the pinion bushing 44,

a p (q -teem,

i :fThe device forming the subject matter-of,

IB surrounds the shaft 3 and isiocated in the application is a mining machinajand the "invem recesses, l6). Thering lteonsti tutes a-retainer ,Asecond ball hearing I a menses the upper portion'jof theshaft 3fabove the ring [3 an is u er tiqnflofthe frame Acollarlfl is detachably assembled by securing The constructionasthus far described is such that the gear 2 is kept properly in mesh with the pinion l, adequate lubrication being afforded, and the shaft 3 being supported, anti-frictionally, for rotation, the features above referred to giving long life to the mining machine, and rendering frequent I renewals of parts unnecessary.

The eye of the cutter bar I is attached by securing devices 26 to a tubular socket 21, having a foot plate 28,connected by securing members 29 to any accessible portion 30 of the mining machine. In the socket; 2lis received the lower end of a fixed hollow shaft 3|, connected, against rotation, tothe socket 21, by a key 32.

The frame F includes anuppertable 34, there being a space. about the table,a lid 36 giving access to the space 35. The table 34 carries an upper socket ,31', which is closed at its top. In

' thesocket 31, isremovably mounted an inverted cup-shaped thimble 38. Near its lower end, the shaft 31 has an outstanding rib 39. A lower .ball

bearing 40 surrounds the shaft 3| and a packing 46 engageszthe lower end of the bearing 40 andis 43, to be described supported by a closure ring hereinafter.

The sprocket wheel 6 includes e nub 4| jour naled in the part 9 of the frame F, within a packing 42. The closure' ring 43 hereinbefore mentioned, is recessed into the bottom of the sprocketwheel 6 and is disposed about the lower Jsocket 21. The gearmember 5 is disposed at M theeupper end of the hub 4|. A bushing 44 is located betweenthe hub 4| and the ball bearing 40. Securing elements 4E'yonnect the gear mem- 'ber 5,the bushing and the closure ring 43. Above the ball bearing 40, a collar 46 is disposed andf islocated within the 3 A headed securing element 45 is seated in the part 30 of the machine and extends upwardly Y through the fixed shaft 3 I,

the'thimble 38 and the socket 31. A nut 50 is threaded on the securing element 45 and engages "thetable 34.

V The securing element 45' has an axial'duct 48,

which leads laterally as shown at 49, through the shaft 3| and the collar 46 and furnishes lubricant to the ball bearing 40. upper ball bearing 41 is -disposed.;about the-shaft 3!; between the thimble 38 on the one hand and the collar {5 and the bushing Mon theother hand. the bearing 41 receiving adequate lubrication from the cavity of the machine that exists above the partition 9. i I

The general construction is such that the advantages here'inbefore alludedto will be attained;

Having thus described the invention, what is claimed is: b I

1. In a mining machine a frame including a partition provided in itsupper surface with a seat, a first ball bearing removably supported in the seat, a shaft having one end received Within pinion, the upper ,end of the hub and the shaft I being. provided with cooperating recesses, a

key connecting the hub of the gear with theshaft, a ring surrounding the shaft and located in the recesses, the ring constituting a v retainer for the key, a second .ball bearing surrounding the upper end of the shaft and engaging thering, a closuredetachablYassembled with upper portion of the frame and exerting pressure on the second ball bearing, and a lubricating connection carried by the closure, the shaft having a longitudinal duct communicating with the lubricating connection and leading to the bottom of the seat. e

2. A mining, machine comprising a frame having fixed upper and lowerpsockets, a thimble in the upper socket, a fixed tubular shaft having its ends received in the thimble and in the lower socket, the ,shaftJhaving' an outstanding abutment rib, a lower ball bearing engaging the rib, a cutter-driving sprocket wheel about the bearing and including a hub spaced from the bearing and journaled in the frame, a closure ring on the bottom of the sprocket wheel and disposed about the lower socket, a gear member at the upper end of the hub, a bushing between the hub and the ball bearing, asecuring element connecting the ear member, the bushing and the closure ring, a collar about the shaft and located within the bushing, thecollar engaging the lower ball bearing, an upper ball bearing about the shaft and engaged between the collar and the thimble, and a tightening device extended through the shaft and engaging the lower part of the frame and the upper socket, the tightening device having a longitudinal oil duct leading laterally through the shaft and the collar to the inner surface of the bushing, and constituting means for lubricating the lower ball bearing.

JOHN JEROME CLINE. 

